Emile knows his brother would enjoy winning the race, but he does not want to make the race so short that it is obvious his brother will win. What will be a good distance to make the race so that Henri will win a close race? Describe your strategy, and give evidence to support your answer.
2.5x=x+45
-x+2.5x=x+45-x
1.5/1.5=45/1.5
x=30
74 meters for the race to be close but Henri wins. At 30 seconds they are level.
There are 3 ways to find the answer:
You can extend graph
Extend the table
Or use variables with equations
F.U At 30 seconds they will be level so 76 miles would be the perect win for Emile but it will be close.
24/5/09
Block-C
Emile knows his brother would enjoy winning the race, but he does not want to make the race so short that it is obvious his brother will win. What will be a good distance to make the race so that Henri will win a close race? Describe your strategy, and give evidence to support your answer.
-x+2.5x=x+45-x
1.5/1.5=45/1.5
x=30
74 meters for the race to be close but Henri wins. At 30 seconds they are level.
There are 3 ways to find the answer:
You can extend graph
Extend the table
Or use variables with equations
F.U
At 30 seconds they will be level so 76 miles would be the perect win for Emile but it will be close.